Block Scholes x Bybit Crypto Derivatives June 27
The past week was packed with enough macro events to make even an asset class as volatile as crypto stand out with more volatility. Over the past seven days alone, the US Senate bilaterally passed the GENIUS Act, a landmark legislation to regulate stablecoins. Later in the week, Fed Chair Jerome Powell reiterated the Fed’s wait-and-see approach as the FOMC left interest rates unchanged. Then, the US militarily intervened in the Middle East and forced a retaliatory response from Iran, before negotiating a peace treaty and ceasefire. Understandably, spot markets plunged and then rallied, and implied volatility has gone through its own series of ups and downs.

Key insights
The past week was packed with enough macro events to make even an asset class as volatile as crypto stand out with more volatility. Over the past seven days alone, the US Senate bilaterally passed the GENIUS Act, a landmark legislation to regulate stablecoins. Later in the week, Fed Chair Jerome Powell reiterated the Fed’s wait-and-see approach as the FOMC left interest rates unchanged. Then, the US militarily intervened in the Middle East and forced a retaliatory response from Iran, before negotiating a peace treaty and ceasefire. Understandably, spot markets plunged and then rallied, and implied volatility has gone through its own series of ups and downs.
Perpetuals: Funding rates for a number of tokens moved negative as the Middle East conflict escalated, and despite a ceasefire, many assets have failed to meaningfully see a return back to positive rates.
Options: Short-tenor implied volatility for ETH options surged upward of 80% — their highest level all month — inverting the term structure of volatility, while a jump in front-end BTC volatility was enough to flatten its term structure temporarily as Bitcoin’s Spot price fell below $100K.
Block Scholes BTC Senti-Meter Index

Block Scholes ETH Senti-Meter Index

Block Scholes’s Senti-Meter Index aggregates the funding rate, future-implied yield and volatility smile skew into a single expression of sentiment in derivatives markets. See more in the methodology article here.
Macro, tech & regs
Macro calendar & recent events
- Japan Manufacturing PMI for June — Jun 23, 2025 — Japan’s manufacturing sector returned to expansion territory, with the PMI rising to 50.4, surpassing expectations of 49.5 and up from 49.4 in May.
- US S&P Services PMI for June — Jun 23, 2025 — Growth in the services sector slowed, as the PMI slipped from 53.1 to 53.7 in the previous month.
- UK S&P Composite PMI for June — Jun 23, 2025 — The composite PMI edged up to 50.6 in June, slightly below expectations of 50.7 but higher than May’s reading of 50.3.
- US GDP second estimate for Q1 — Jun 26, 2025 — The second estimate for US GDP is expected to confirm a −0.2% contraction in the first quarter of the year.
- US PCE Price Index for May — Jun 27, 2025 — The US PCE Price Index is expected to have risen to 2.3% year-over-year in May, up from 2.1% in April.
- Japan Tokyo CPI Inflation for June — Jun 27, 2025 — Headline inflation in Tokyo is expected to have eased from 3.4% YoY in May to 3.3% in June, while core CPI is projected to have declined to 3.3% from 3.6%.
- University of Michigan Consumer Sentiment for June — Jun 27, 2025 — Consumer sentiment is projected to edge down, from 60.5 in June to 60.3.
The 12-Day War — BTC, ETH and SOL all fell as the Iran-Israel conflict escalated on Jun 12, 2025. Spot reverted with the ceasefire announcement on Jun 23, 2025.

Trending news
- President Trump posted on his Truth Social Platform, “It has been fully agreed by and between Israel and Iran that there will be a Complete and Total CEASEFIRE”, referring to the 12-day conflict as “‘THE 12 DAY WAR.’”
- Strategy has purchased an additional 245 BTC at an average price of $105,856 per coin, bringing its total holdings to 592,345 BTC. Their total BTC holdings are now worth approximately $41.87B, with a total average cost of $70,681 per Bitcoin.
Explosive macro setting, flat open interest at $9B
Key insights
Despite a geopolitical roller coaster of a week, open interest in perpetual futures contracts has broadly remained resilient at around $9—10B. The slight dip on Jun 22, 2025 coincided with Iran’s retaliatory strikes against the US’s largest military airbase in Qatar, though open interest quickly picked up following the drop. That pickup coincided with reports that Iran had given advance notice to President Trump of the attack, a sign of a willingness to deescalate tensions. Over the past few days, open interest in altcoins has ticked up, particularly in ETH contracts from $2.2B to $2.6B, while open interest for BTC has stayed flat (and still dominant at nearly 60% of total OI).
The two highest days of perp trading volume this month were also achieved over the past seven days alone — on 22 Jun, 2025 (as mentioned, the day of the Iranian attack) it reached $27B, and on the following day when markets soared in response to a ceasefire being announced.
BYBIT PERP OPEN INTEREST — BTC open interest has stayed flat, while open interest for altcoins has ticked up over the past three days.

BYBIT PERP TRADING VOLUMES — Daily trading volume reached its peak of $27B during the pinnacle of what President Trump has dubbed the “12-Day War.”

Mixed funding
Funding rates across all tokens over the past week have varied and fluctuated significantly. BTC, ETH, DOGE and ADA saw traders willing to pay for leveraged long exposure on Jun 18, 2025, when the landmark stablecoin legislation, the GENIUS Act, was officially passed by the US Senate. Funding rates then generally plunged across the twelve observed assets on Jun 22, 2025 coinciding with US strikes on three key Iranian nuclear facilities, which brought President Trump’s government directly into the midst of the Middle East conflict. Despite the resolution — a fragile ceasefire which Trump has claimed both parties have violated — funding rates for all tokens didn’t immediately return to positive territory (for example, XRP and ATOM).

BTC options
Key insights
BTC’s spot price has gone through a whirlwind, given recent market events. On Jun 22, 2025, it fell below $100K for the first time since early May 2025 as President Trump confirmed the US attack on Iran. However, in the days since then it’s recovered to trade above $106K once more. Despite these large moves in spot price, implied volatility for BTC options hasn’t spiked dramatically to the point where the term structure of volatility has inverted (unlike ETH’s).
Even as the US’s intervention was officially confirmed by Trump and various news outlets, BTC’s front-end volatility ticked up only slightly from 35%. The closest to an inversion occurred later that day, when reports circulated that the Iranian government had voted to close the Strait of Hormuz — a key trade pipeline through which 20% of global oil passes. That announcement sent front-end volatility to 45%, in line with the IV of the 180-day option. Following the ceasefire announcement, ATM IV has once again dropped off — this time even further below the 35% before the US intervened — and it’s now trading at 32%.
BYBIT BTC OPTIONS VOLUMES

BYBIT BTC OPTIONS OPEN INTEREST

BTC volatility term structure flattened
BYBIT BTC ATM TERM STRUCTURE — BTC volatility is at outright lower levels relative to last week, though it exhibits the same positive slope.

BYBIT BTC SVI ATM IMPLIED VOLATILITY — The term structure of implied volatility for BTC temporarily flattened as IV hovered between 43–45%, though it’s now returned to an upward sloping curve.

BYBIT BTC IMPLIED AND REALIZED VOLATILITY — Realized volatility has surged to 43%, while implied volatility has moved in the opposite direction toward 35%.

ETH options
Key insights
With ETH failing to break its typical historical pattern of higher volatility and underperformance in a sell-off, the most recent geopolitical developments and consequent ceasefire in the Middle East caused its spot price to drop harder than BTC’s, and to rally further on the way up. In Jun 22, 2025 intraday trading, ETH fell to below $2,200, its lowest level since May 9, 2025. Since that bottom, however, ETH is up more than 12%, in comparison to BTC’s 8% rally from its recent $98K bottom to its current spot price. ETH’s term structure of volatility dutifully inverted during the depths of the crisis before flattening, while its volatility smile tilted toward OTM puts by a significant 11% for short-dated options. The skew towards OTM puts has since abated – but the 7-day skew still remains slightly bearish at -0.9% despite the recovery in spot price.
The term structure inversion isn’t the only contrast to BTC options markets, either. Open interest and options volumes for ETH over the past week have been triumphant in calls — a stark comparison to the denomination of puts in both BTC open interest and volume.
BYBIT ETH OPTIONS VOLUMES

BYBIT ETH OPTIONS OPEN INTEREST

Inverted then flattened
BYBIT ETH VOLATILITY TERM STRUCTURE — ETH’s term structure of volatility is currently flat, as outright volatility levels are trading at around 65%.

BYBIT ETH SVI ATM IMPLIED VOLATILITY — Short-tenor volatility levels jumped to their highest levels all month (81%) during the Middle East conflict, inverting the term structure before falling.

BYBIT ETH IMPLIED AND REALIZED VOLATILITY — ETH realized volatility has also surged over the past week to 80%, while the 30-day implied volatility has mostly traded sideways above 60%.

SOL options
After dominating the majority of crypto headlines earlier in this bull cycle, particularly when President Trump launched his own meme coin on Solana, the network has largely failed to regain the same level of traction over the past few months. Within the past week, SOL’s spot price has traded at between $130 and $150, and is almost flat at +0.32% over the past seven days. Meanwhile, options volumes for SOL this past week have been dominated by puts. On Jun 24, 2025, volume in puts exceeded $2M, compared to less than $500K in calls. Open interest, on the other hand (as has been the case all month) remains significantly larger in calls, and is just over 2x greater.
BYBIT SOLUSDT OPTIONS VOLUMES

BYBIT SOLUSDT OPTIONS OPEN INTEREST

SOL volatility
BYBIT SOL VOLATILITY TERM STRUCTURE — The belly of the curve is higher than the front end for SOL, though tenors further out are trading with lower volatility.

BYBIT SOL SVI ATM IMPLIED VOLATILITY — As with ETH, SOL’s term structure of volatility inverted earlier this week as 7-day IV rose to its highest level all month (85%).

BYBIT SOL IMPLIED AND REALIZED VOLATILITY — Realized and implied volatility for SOL contrasts with that of BTC and ETH, both of which are moving in line with each other. Realized volatility for SOL has moved up and is now close to 90%.

Skew for BTC and ETH turns bearish before recovering
Key insights
Volatility smiles for both BTC and ETH dramatically turned negative (toward out-of-the-money puts) earlier this week. The 25-delta put-call skew ratio for BTC fell to a low of −8.89% only a week after briefly reaching the current June high of 5.56%. Moreover, ETH wasn’t spared from that bearishness — as its 7-day skew fell as low as −11% toward OTM puts before rebounding now to a far-less bearish value of −0.9%. This week, the sentiment in options markets is closer to that of perpetual futures markets: both dropped into negative territory during the peak of the conflict between Israel, the US and Iran, and both have failed to recover to a meaningful positive value yet (with BTC and ETH funding rates fluctuating between positive and negative).
BYBIT BTCUSDT CALL-PUT SKEW

BYBIT ETHUSDT CALL-PUT SKEW

Volatility by exchange
BTC, 1-MONTH TENOR, SVI CALIBRATION

ETH, 1-MONTH TENOR, SVI CALIBRATION

Bybit volatility surface


Constant maturity smile


Data & methodology
Data acquisition, composition & timeline
Open interest and trading volume data are sourced “as is” from the Bybit exchange platform API exclusively, and as such do not represent a comprehensive picture of the sum of trading activity across all derivatives markets or exchanges. The data visualized in this report consists of hourly and daily snapshots, recorded over the previous 30 days. Daily (hourly) snapshots of trade volume record the total sum of the notional value of trades recorded in the 24H (1 hour) period, beginning with the snapshot timestamp.
If not explicitly labeled as derived from another exchange, the input instrument prices to all derivatives analytics metrics in this report are sourced from the appropriate endpoints of Bybit’s public exchange platform API. In the event that data is labeled or referred to as representing the market on another exchange source, that data is sourced from the appropriate endpoint of each respective exchange’s public API.
Macroeconomic charts and data are sourced “as is” from the Bloomberg Terminal. Exchange data is sourced “as is” from publicly available exchange APIs. Block Scholes makes no claims about the veracity of public third-party data.
Open interest & volume dollar denomination
After acquisition of underlying-denominated raw data for open interest and trading volume on the Bybit exchange platform from Bybit’s API endpoint, equivalent dollar-denominated figures are calculated using the concurrent value of Block Scholes’s Spot Index for the relevant underlying asset.
Block Scholes’s Spot Index represents the aggregate Spot mid-price for a given currency across the top five CEXs by volume (with USD-quoted markets). It considers the proportion of total volume in the instrument on the exchange, as well as the deviation of a data point from those on other exchanges.
Block Scholes–derived analytics metrics
Futures prices are used for Block Scholes’s futures-implied yields calculation services in order to derive the constant-tenor annualized yields displayed in the Futures section of this report.
Options prices are used for Block Scholes’s implied volatility calculation services in order to calibrate volatility surfaces, from which all derivatives volatility analytics displayed in the BTC Options and ETH Options sections of this report are calculated. Volatility smiles are constructed by calibrating to mid-market prices observed in Bybit options markets. As part of the calibration process, prices go through rigorous filtration and cleaning steps, which ensures that the resulting volatility surface is arbitrage-free and has exceptional fit to the market observables.